Edit report at https://bugs.php.net/bug.php?id=77194&edit=1
ID: 77194
Comment by: jake at qzdesign dot co dot uk
Reported by: svbussww at 126 dot com
Summary: php7ts.dll crashing when running embed
Status: Open
Type: Bug
Package: Reproducible crash
Operating System: Windows 7
PHP Version: 7.2.12
Block user comment: N
Private report: N
New Comment:
Seems with XDebug enabled, I at least get "Script phpunit ... handling the ... event returned
with error code -1073741819" from Composer. But still can't find anything in Event Viewer
since latest Windows update.
This isn't AFAIAA running multithreaded, though is with the MT dist. We're not actively
using ext-pthreads (and not at all unless enabled in the default php.ini).
I've tried doubling memory_limit and it makes no difference.
My issue might not be the same but does at this stage appear related (though the OP states
"running embed"). It's the closest-matching existing issue I could find, and
it's a similar-looking crash in php7ts.dll. Like I said, heap corruption coming from
somewhere??
Previous Comments:
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[2019-10-12 00:19:01] jake at qzdesign dot co dot uk
Some comments suggest multithreading issue. Any way to run Composer/PHP restricted to one thread
(with multithreaded install)? Could try that and see if problem goes away. Won't be
conclusive but might provide clue.
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[2019-10-11 23:59:53] jake at qzdesign dot co dot uk
I think there is a heap corruption issue in PHP, at least in the Windows (x64) build.
I've got some complex tests (running via PHPUnit), and I hit this issue almost every time.
Sometimes the tests will run to completion, but most times they'll crash at some different
point. It will be an APPCRASH at one of about three or four apparently random points in the
process. And always at the same address in php7ts.dll.
As I'm sure you can understand, it's difficult to isolate this further. I can confirm it
happens with both PHP 7.1.30 and 7.3.4.
This is further frustrated by a Windows 10 update (yes, I know, we need to stop these forced updates
from Microsoft, but easier said than done) to version 1903 (18362.418) which appears to silence
APPCRASH: it no longer appears in the Event Log, and Composer is unable to detect the 'return
value' exception code but is forced to exit silently itself.
Any suggestions on how to restore logging of APPCRASH events since this latest Microsoft atrocity
would be welcomed...
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[2019-02-14 18:13:00] ab@php.net
I don't think the patch is the right solution to this after all. The issue seems to be very
specific and affect some specific system configuration. In fact, i couldn't confirm there are
issues with the memory manager. The change as in the patch would introduce memory fragmentation in
opposite to VirtualAlloc, which would affect performance. 32-bit might be well more affected, but
from the backtraces the build used seems to be actually 64-bit. Given Windows 7 reaches EOL in less
than a year and such issues are not massively reported, probably the issue is a low priority.
Thanks.
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[2019-01-22 08:08:51] jr at concept-br dot de
Change from 32 build to 64 build (Apache + PHP) >> Works like a charm!
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[2018-12-09 17:02:50] ab@php.net
@jr at concept-br dot de, please post a backtrace.
Thanks.
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